PubMed

Contains over 21 million citations for biomedical literature from MEDLINE, life science journals & online books.

 If you want to make a personal account within PubMed, go there using this unproxied link first, and then you can use the "more login options" to find University of Prince Edward Island (under U) and login via your campus account, or you can use one of the other options like Google or Microsoft with your personal (not UPEI) Google/Microsoft account.